Study on gas exchange characteristics of six horticultural plants
10.16289/j.cnki.1002-0837.2024.05005
- VernacularTitle:6种园艺植物气体交换特性研究
- Author:
Cong ZHANG
1
;
Yongkang TANG
;
Jianxiao WANG
;
Hao WU
;
Ruixin MAO
;
Yunjie JI
Author Information
1. 人因工程全国重点实验室(中国航天员科研训练中心),北京 100094;河北工程大学园林与生态工程学院,邯郸 056000
- Keywords:
horticultural plants;
gas exchange;
light intensity;
carbon dioxide concentration
- From:Space Medicine & Medical Engineering
2024;35(5):295-301
- CountryChina
- Language:Chinese
-
Abstract:
Objective In order to use plants to absorb high concentration carbon dioxide in closed space,the gas exchange capacity and regulation measures of six horticultural plants were explored.Methods The gas exchange characteristics of Bamboo Palm,Chrysanthemum,Peace Lily,Anthurium,Aloe vera,and Nephrolepis exaltata were studied under three light gradients[170 μmol/(m2·s),270 μmol/(m2·s),370 μmol/(m2·s)]and four carbon dioxide concentration gradients(500 ppm,1 000 ppm,1 500 ppm,2 000 ppm)using a closed low-pressure device.Results The results indicate significant differences in the average photosynthetic rates among the six plants,with the ranking order as Chrysanthemum>Peace Lily>Bamboo Palm>Aloe vera>Anthurium>Nephrolepis exaltata.In contrast,the transpiration rate and respiration rate of Chrysanthemum,Peace Lily and Bamoo Palm were higher,aloe vera absorbed carbon dioxide under dark conditions.Under a light intensity of 370 μmol/(m2·s),the photosynthetic rate of Bamboo Palm was most enhanced,2.57 times that under the condition of 170 μmol/(m2·s),whereas high light intensity suppressed the photosynthetic rate of Nephrolepis exaltata,which was about 3%lower than that under low light intensity.Under a carbon dioxide concentration of 2 000 ppm,the photosynthetic rates of Chrysanthemum,Peace Lily,and Bamboo Palm was more than 9.13 μmol CO2/(m2·s),approximately three times the average rate under low carbon dioxide concentration.Conclusion Among the six horticultural plants,Chrysanthemum,Bamboo Palm,and Peace Lily exhibit superior gas exchange capabilities,and increasing the light intensity and carbon dioxide concentration in the cultivation environment significantly enhances the photosynthetic rate of these three plants.
